Again some inspiration from the TV series Taskmaster. We've had success in the past with the 'Backwards Video Task'. In the most recent series, the contestants were asked to film something that when sped up or slowed down made it more interesting or amusing.
Again like before, use it as a group work and/or ICT task. Both iMovie and Movie Maker allow speeding up or slowing down a clip and apps can be purchased to do the same too.